Water purifier



E. JvsRoc K WATER PURIFIER March 3, 1931.

3 Sheets-Sheet l Filed May 14, 1927 5 3 27/6, Qlil. I Z, 4 a I. 66 UHH U3P3 MM 4, 3 Z

March 3, 193 1. J BRQCK 1,794,396

WATER PURIFIER Filed May 14. 1927. 3 Sheets-Sheet 2 March 3, 1931. E. J.BROCK 1,794,396

WATER PURIFIER Filed May 14, 1927, 3 Sheets-Sheet 5 vc/v 7-073- xiowA-eoJ? Becca.

Patented h lls-r9 Mum series.

Jen /Vanna. Bacon, or s'r. LonIs, MISSOURI 7 w r runrrrnnApplicatioirfiled air-1i, 1927. Serial No. 191331.

This invention relates generallyto water purifiers such as are used inconjunctionwith boilers'lor mechanically removing sedimentandin'ipurities from the feed water before introducing it into theboiler, and the invention has particular reference 'toa water =puri-'fier which may be used in conjunction with a water tube boiler as wellas with horizon tal boilers, and boilers of other types;

lily-improved purifier may also be used for purifyin water to be passedthrough the water jackets {of enginesfor cooling purposes The waterpurifiendisclosed in the pres} entapplication is an improvement on' thewater purifier disclosed in an application filed by me on May 22nd,1926, Ser. No. 110,900. it was found in actual ,practicethat though theapparatus disclosed in the pend ing application referred to was verywell adapted for use with horizontal boilers and functioned with greatefiiciency'when used with a boiler of this type, it could. not be madeto function eilicieni'ly when used in conjunction with water tube andother boilers of relatively great evaporat-ing capacity, because of itslimited capacity. lhe purifier disclosed in my pending applicationcoinprises a single elongated shell through which the water to bepurified. passed, and while this shell. my be 01 any desired length insofar as its operation is concernediand conse quentlycould be-ol' enormouslengthfito have snl'lici'ent capacity'so'that it may be associ ated witha water tube or other boiler having great evaporating capacity, stillthe length of the shell islimited by the dimen' boiler setting and ofthe bo ler I have. there sions of the room in which it is contained.

fore devised the apparatus disclosed in the present applicatioin whichembodies the prin-; P CS oi the earlier invention but is elaboi ratedand modified with relation thereto, so hat the present apparaus iscapable of very eliieient operation with a watertube boiler.

T he genera-l objects of the present ii1vention are the samefas those inconnection with the invention disclosed in my earlier ap iication forpatent referred-to, to whiohatten tion is directed, and in addition tothose-ob j ects,"the predominant object of the present on line 88 ofFig.3;

invention is to produce a purifier embodying the principles of myearlier invention which will functionwith great efliciency inCOHjUEIQLiOH with a water tube or otherboiler having relatively greatevaporating capacity.

Figure 1 is a fragmentary plan view of my improved purifier associatedwith a water tube boiler, a part of the boiler being broken away to showthe manner in which the purifier is connected to theboiler;

Figure 2 is a side elevation of the boiler and purifier shown inFig. 1;

Figure 3 is an end elevation of the and purifier shown in Figs. 1 and2';

Figure l is anenlarged fragmentary sectional detail showing the mannerin which the connection leading tonne of the sediment dischargepipeswithin a shell of thepurifier is extendedthrough;the wall of saidshell; I I

Figure 5 is an enlarged fragmentary sectional detail showing the mannerof extending one of the sediment discharge pipes through awall of ashell of the purifier when said discharge pipe is extended through ahead of said shell;

Figure 6 is a side elevation of a boiler provided with my improvedpurifier and illuscrating a modified form of means for con necting thepurifier to the boiler;

liigure 7 is an end elevation of the boiler andpurifier shownin Fig. (3,parts of the boiler boiler being broken away to show the means forconnecting the purifier to the boiler;

Figure 8 IS an enlarged sectional view taken Figure 9 is a horizontalsection. oi the dome of the uppermost shell of the purifier looltiiupwardly and showing the blow-oft pipe therein. a

Referring now to the drawings, A designates a water tube boiler, the s aertub-e boiler illustrated in the drawings the Stirling type, but it isobvious, olfcourse that the invention maybe used with boilers othertypes. The boiler A is provided wi the usual walls and includes aplurality oi steam drums B at the upper portionof the boiler and a muddrum C at the lower port of saidboller. eThe mud drum is connected tothe steam drums B by the usual tubes D (Fig. The purifier, which isdesignated generally by the reference character P, comprises a pluralityof elongated shells 1, said elongated shells 1 being preferably arrangedone above the other and the longitudinal axis of each of said shellsbeing. supported in a substantially horizontal position below the waterlevel of the boiler. The righthand end of the uppermost shell 1 is theinlet end of the purifier and receives water from the boiler throughconnections 2 which may be certain of the water tubes of the boilerwhich have been severed associated with one of the steam drums 13extended through a side wall of the boiler. It is obvious, however,when'portious of severed tubes would not be the proper length, that saidtubes may be removed entirely from the boiler and new tubes associatedwith said boiler to produce the connections 2. The connections 2- are incommunication with a coupling 3 through which latter a feed water pipe-4extends through the instrumentality of a communicating elongated pipe 5which is bolted to and is in communication with the coupling 3 as shownin Fig. 2; said elongated pipe being closed at its outer end by a cap 6.

and

At its lower end, the coupling is provided with a flange 8 which isbolted as at 9 to a casting 10 riveted on the top of the uppermost shell1 near one end thereof (Fig. 8).- The coupling 3 is provided with athroat 11 communicating with the pipe 5' and which tends throughthenange 8 and con'nnun cates with an opening in the casting 10 which,in turn, communicates with an opening 12 in the top of the purifiershell. The lower side of the throat 11 extending from the end of thepipe 5 to the opening in the casting 10 is curved, as indicated at- 13,which construction permits of the easy flow of the water from the boiler'to the purifier without an abrupt change in its course, therebyreducingfriction. The feed water pipe l extends to near the lower end ofthe throatll. so that as the cold feed water is discharged from thelower end of this pipe, it tends'to produce a siphon effectand towithdraw the hot water from the boiler and thus promote the circulationof the same with the cold water through the purifier. The throat 11 alsoaffords a mix 7 ing chamber for the hot and cold water, and

this construction also avoids an objection in. cident to certain priorconstructions, 111 that in the latter, the outlet passage to thepurifier shell would very frequently become clo D23"; by depositsfromthe water entering througn the pipe 1. In the construction-described andshown in Fig. 8, a free passage of relatively large diameter isprovid'edforthe passage of the water 'intothe purifier shell, and this'pas sagewill beautomatically kept clean' bytl'n how of the water into the shell.Fin-then. the-lower end ofith nire s x nds oine r.

the portions thereof 7 ing opportunity for impurities therein to depositon the wall of the throat.

The water passes from the throat 11 down into the uppermost shell andonto a longitudinally inclined baffle 15, which is preferably set at anangle of approximately 22 and which prevents the incoming water fromagitating the water and sediment within the upper-shell and also causesthe water to have a longer course of travel. On the bottom of theuppermost shell of the purifier, I preferably provide two baflles orbafile plates, the one indicated by thenumeral 16 being located towardthe feed end of the shell, and the other, 17, being located centrally ofthe shell. Thesebafiies tend to prevent or to interrupt circulationalong the bottom of the uppermost shell of the purifier, so that thesediment will accumulate and deposit onsaid bottom. In order todischarge the sediment from the uppermost shell of the purifier, Iprovide two or more sediment discharge pipes 18 and 19, respectively,the discharge pipe 18 extending from a point adjacent to the bafileplate 17- to a point near the righthand end of the purifier shell, asshown in Fig. 1, and the discharge pipe 19 extending from a pointadjacent to the bafile plate 17 to a point near the lefthand end of thepurifier. Each of these sediment discharge pipes 18 and 19 is closed atits opposite ends by caps 20 and is provided along its bottom withperforations which will be referred to later herein. Each of these pipesis preferably formed in two sections connected centrally to a T-coupling21 and to these couplings are connectedoutlet pipes 22- and 23,respectively. The outlet pipes 22 and 23 are connected to downwardlyinclined pipes 24 which are, in turn, connected at their lower ends, asshown in Fig. 2, to the main blow-01f pipe 25; each of the outlet pipes22 and 23 is provided with its individual valve 26 which enable the twosediment pipesto be blown out independently if desired. This arrangementpermit-s the use of pipes of relatively small size, which are convenientand economical to operate,.and also when the section of the purifiershell on one side of the baflle plate 17 is blown: out, thisoperation'does not disturb tgefiediment inthe other part of the purifiers e .On the upper side of the uppermost shell of the" purifier andprojecting downwardly into the'interior thereof, preferably at an angleof approximately 47, I providea baffle plate 27 near the outlet. end ofthe shell, whiehoperates to reta-rd the rate. of; circula-' tionele e fii 1p'pr-'p'art Ofzfih'er-shllhhd' to masses lengthen the path' of thecirculationf Between the bafileplateQT and the end or head i 1128 oft-heshell, Iprovide an outlet stand pipe n ch.)

of the purifier.

29 having its mouthSO vdisposed at an elevaof, isprovided-withanfopening in its wall at the top thereof iwhich-is 1n verticallahnementwith the stand PiPGrQQ' in said uppermost shell, and arranged adjacentto the opening inthe lower shell is a tanltflange 32 similar to the tankflange glalreadyreferred to. The

tank flanges 31 and .32 are connected by means of a short section ofpipe 33, whereby water which passes into the mouth 30 of thestand pipe29 will pass into the intermediate shell By reason of the presence andlocation of the baffle plate 2-7, an air pocket'is formed in which airtends to accumulate in the vicinity of the mouth 30 of the pipe 29 andto stop the circulationin thepurifierwhen the latter is first filled. Inorder-to prevent this, I provide means for releasing any airwhich mayaccumulate at this point."

V For this purpose, Iprovide a by-pass connection 3lwh1ch Wlll operateto automatlcally release air from the vicinity of the mouth .30 to anair, oil and sediment trap which I provide on the upper side of theuppermost shell of the purifier back of the bafiie 27. The by-passconnection: 34 is connected to the shell above the top of the stand.pipe29 and communicates with the trap 35 through {the side thereof at apoint preferably about midway of its height. ;The trap 35 due to thehigh temperature in the shell, operatestoitrap any air, oil orsedimentmovihg along the upper side of the shell as will be understood.in orderto provide torreleasiug airwlurh may accuinmulate in tlusltrap,I provide a line oi pipingSti which is-in connnunicatimi :with, the

interior oit the trap 35 at the top tl'iereot and communicates atitsopposite end with one of the steam drums B at the upper portion ofthe boiler; Also, if desired, the piping 36 'may-lead to the'steam'pipeleading from the boiler, or the trap 35 may he provided with an'automaticallyeoperated valve for releasing theair therein, as shown inmy pending -applica'tion.

tlche sedim-ent pipes-1S and 19 are pro? .111; I previously stated, withperforations, and 'theseipertorations arepreterably located on theLmdersidel-only of the: pipes and extend throughout their -:length. WhenJeither or vindicated the numeral :the ne 410 "is made to equal the areaof the pipe t0, .eliowancebeing made" for'iriction, and in this way allof the apertures int-he blow-off the valves E26 ai'copened, he pressurewu'ilunlthe Iupper: shell of the puni 0 force sediment out throughtheper- "ii'i la aons iii-the sedlment pipes and through their outletconnections. According to'this invention;the size of the openings in thepipes l8 and 19 is-such thatthcirtotalareawill equal the areaoit theoutlet pipes 22 and 23, allowance beinlg made also for friction.

lnpractice, it is found-that most ofthe sediment accumulates inthe'inlet end oi the shell, and, therefore, f he outlet connection mustbe opened inuchmore frequently thanthe outlet connection L 23.'ilatezl'i itacihtatesthe operation of blowing- The bathe o'utoi'ie endof theshcll as it tends to p ent disturbance of the sediment in the oppsite t haitlo ll. therefore, pcrtorms a this '1' other funct in or"tending to iiacilitate the deposit ot sr innen in the inlet end ot'theshell. The baffle 16 directs'the circulation to the top of the shell andto a large extent prevents the sediment in the bottom oft'he shell frombeing stirred up,and ai fords, -therefore, a quiet mneend amplespace inwhich impurities may settle out of the water in the path of-circulation.The battle 27, of course, prevents the c irect'tlow of water along thetop of the shell through they mouth, 30 oitthestand pipe 29 andrbyhires-ting the circulation down ward, tends-to cause the impurities,which are heavier than the water,'to to and tie on, the'hotto'm oftheshell so-thst only the mouth The surface of: the wateryiii theyti'ep35 P-Jlil, a" r a time, be covered w th. scum' oil \Y 'l t r mark, \l L:elitrc, imam order to remove ti proi'id trated clearly in Fig, 2. Thisblow-oft in theforni (it a pipe 4-(lv3vhich. at one l as shown. inli ig;2,is connected'to the angularly a ranged blow-oft pipe 24', associatedwith V liment discharge pipe 1.9-,=at apoint below the valve 26. :Atitsupper end, this pipe 4L0 has a horizontal extension entering; the

side of the rap ilii, and said-pipeis preferably bent to substantiallyon" 'cle' the interior of said trapanr 's: provided outer end with a capll. The cirr tion of this blow-oft pipe within the ijl'itj) is l2anditsyumilerside is provided with ies of perform tiions 43 whichreferably decrease indiain eter, rs shown, trointhe outer end containcapil to the entrance ponitof the The total. area'o t the apertures 43portion are eii'ective. in removing scum from thesurtace of thewater-inthe trap.

-The pipe +10 is providedcwith a valve 44 substantially atthe'polntwheresad pipeis conspect, in addition to its relatively pure Waterwillrise andpass into a suritace blow-oft which isillus" nected to theblow-off pipe 24, whereby passage of matter through said blow-off pipemay be controlled, and it is obvious, of course, that the blowing oifaction occurs whenever said valve i l-is opened.

The shell 1 of .the purifier P, or the shell which I have previouslyreferred to as the intermediateshell, is a duplicate of the uppermostshell alreadydescribed indetail, with the eXc-eption'that insofar. asthe positions of the various bafiles and the stand pipe located thereinare concerned, the intermediate shell is arranged with ends reversedwith respect to the uppermost shell. Located within the intermediateshell at the lefthand or feed end thereof is a longitudinally-inclinedbaflie 15 arranged preferably at an angle of approximately 22, whichbaflie corresponds to the baffle 15 in the uppermost shell, said bafflebeing intended to prevent incoming water from agitating the water andsediment within said intermediate shell. The intermediate shell is alsoprovided with a baflle l6 at the feed end thereof and 'a bafile 47located centrally ofthe shell, which battles tend to prevent orinterruptcirculationialong the bottom of the shell so that sedimentwillaccumulate and deposit onsaid bottom.

In order to discharge the sediment from the intermediate shell of thepurifier, I provide two or more sediment discharge pipes 48 and 49,respectively, the discharge pipe 48 extending from a point adjacent tothe bafile 47 to a point near the lefthand end of the shell, and thedischarge pipe 49 extend ing from a point adjacent to said bafille 47 toa point near the righthand end of the shell. Each of these sedimentdischarge pipes is closed at its opposite ends by caps 50 and isprovided along its bottom with perforations. As in the case of thesediment discharge pipes associated with the uppermost shell, each ofthe sediment discharge pipes 48 and 19 ispreferably formed in twosections connected centrally 'to a T-coupling,

and to these couplings are connected outlet pipes 51 and 52,respectively. The outlet pipes 51 and 52 are connected to downwardlyinclined pipes 53 which are, in turn, connected at'their lower ends asshown in Fig. 2 to the main blow-oft pipe 25. Also, each ofthe outletpipes 51 and 52 is provided with its individual valve 5% which enablesthe two sediment pipes to be blown out independently 'if' desired.In'the upper-portion of the intermediate shell at the dischargeendthereof, I provide a ba'lfile plate 55 which, as in the case ofthe:baffle 27 in the upper shell, is arranged preferablyat an angle ofapproxi- .mately 47, said 'baflle' being intended to retaid'the "rate ofcirculation a-long'the upper "part ofthe shelland to lengthen the path"ofcirculation. Between the'baflle'plate 55 and "the *righthand end ofthe shell, I-prowide an outlet stand pipe 56jh-awing its mouth 57disposed at an elevationwithin'thei shell so that substantially: onlyclear soft water will enterthis stand pipe. The .pipe.56 is vertical andis connectedat its lower end to a tank-flange 56. which-is. secured tothe .shell at the bottom thereof in such manner flange 58 similar to thetankflange 56 already:referredto. The tank flanges56 and 58 areconnectedby means ofa short section of pipe59 whereby water which passes intothe-mouth 57 ofthe stand pipe 56 within the intermediate shellwill passinto the lowermost shell of the purifier.-

" Thelowermost shell; of the purifier is a duplicateof=theuppermost'shell and of the inter1nediateshell of the purifier withthe exception that, insofar as the positions of the battles and standpipe of-the-lowermost shell are'concerned, said lowermost shell isarranged withends reversed with respect to the intermediate shell.

The water passing into the lowermost shell from the intermediate'shellcontacts with a longitudinally-inclinedbaflle 60 which ispreferably set at an angle of approximately 22,

this baflle, as is the case in connection with the baffles 45 and 15,being intended to prevent'the incoming waterfrom agitating the -waterand sediment within the lowermost shell, and said baflie 60 also causesthe incoming water to have a longer course of travel. On the bottom ofthe lowermost shell, I provide two bafiles or baffle plates 61, and 62,located adjacentto the feed end and centrally of the shell,respectively. These baliles tendto prevent orto interrupt circulationalong thebottombf'the 'lowermostshell of 1 the purifier, so that thesediment will ac-' cumulate and deposit-on said bottom. The lowermostshell is also provided with two or more sediment discharge pipes 63 and64,

the discharge pipe 63 extending from a point adjacent to the baffle 62toa point near the righthand end of the purifiershell, and the dischargepipe 64 extendingfrom a point adj acenttosaic'l baflle p1at'e 62 to apoint near the lefthandeend ofthe shell. 'f-Each of these sedimentdischarge pipes 63 and 64-is closed at its opposite endsf'by caps 65 andis provided along its bottom-withperforations.

Each of'these pipes-is preferably formed in two sections connectedcentrally to a'T- coupling-and to these: couplings are .connectedoutlet-pipes .66 and'67, respectively. The outlet pipes .66 and167-are-connected to downwardly-inclined pipes68which are,- in-turn,.connected atltheinrlower ends'asishown in Fig. 2', to the mainblow-off pipe 25. Each of the outlet pipes 66 and 67 is provided withits individual valve 69'which enable the two sediment pipes to be blownout independently if desired. 7

In the upper portion of the lowermost shell at the'discharge'endtliereof is a-bafile plate 70 which inclines downwardly into theinterior of the shell, preferably at an-angle of approximately 47. Thisbaffle plate operates toretard circulation along the upper part of theshell and to lengthen the path of circulation. Between the bafiie plate70 and the adjacent end of the shell, I provide an outlet stand pipe 71having its mouth 72 disposed at an elevation within the shell so thatsubstantially only clear soft water will enter this stand'pipe. Thestand pipe 71 is arranged vertically and extends through an opening inthe wall of the shell at the bottom thereof, and said stand pipe isconnected atits lower end to a tank flange 73 which is securedto theshell so as to provide a pressure-tight joint at this point. 74designates an elbow, or other suitable connection, which 'isincon'nnunication: with the stand pipe 71 and isse'cured to the tankflange 7 3, sald elbow 74 being'connected by means of bolts or otherwiseto a pipe 75 which extends longi tudinally of the lowermost shell of thepunfier at a point immediately below said lowermost shell. At the endthereofremote from the end of the pipe 75 which is connected to theelbow 74, said pipe is providedwith a cap- 7 6by means of which said endof said pipe is closed. 3 1 To connect the discharge end of the'purlfierto the boiler, I employ tubes which may be portions of the watertubeswhich weresevered to provide the inlet connections 2 and which tubeportions are associated wlth the mud drum of the boiler. These tubeportions, which are'designated by the reference character 77 in thedrawings, are extended through a wallof the boiler and connect the muddrumC of the boiler with the elongated -pipe 7 5. Also asin the case oftheconnec- .7 of the pipe 75 approximatelyequals' the area I respectiveshells, I associate with each'of said i tions 2, separate tubes may beemployed inr v shown 1n Figs. 6. and 7 stead of using par-ts of watertubes of the -boiler, if desired. In this'manner, water which passesthrough the pipe 75 w ll pass into and'throughthe'tube portions 77 andinto the muddrum of the boiler. The area of-all of the connections'77,allowance being i made for friction.

To provide for releasing air which may ac- 1 I p I g ratedlSChfiI'gGCOIlIlQCtlOII 86 which is concumulate in the air pocketsproduced acent to the openupper ends of the stand pipes in theintermediate and lower shells by the presence of the battle plates 45and 70 in the shells an air-by pass. The by-pass associated with theintermediate shell comprises a pipe 78 which is connected to saidinter'medithat the opposite valve 36 Kate shell above the stand pipe 56and extends longitudinally of said intermediate shell to a point beyondthe lefthand end thereof (Fig.

2). Likewise, the by-pass associated with the lowermost shell comprisesa! pipe 79 connected to said lowermost shell above the stand pipe 71 andextends beyond the lefthand end of said shell. The pipes 78 and 7 9 areconnected to a pipe 80 which connects to and communicates with the pipe36 leading from the'trap 35' of the uppermost shell to one of the steamdrums of the boiler. In View of this arrangement, it is obvious that airwill positing any impurities and sediment that maybe contained in saidfeed water on the bottoms of the shells so that when said waterfinallyjpasses into themud drum of the boiler,

it willbe free from impurities and sediment.

' This action is 'dueto the high temperature within the shellscomprising'the purifier,-

which temperature,

, however, is a few degrees under boiling temperature, so that noboilingtakes place in the purifier. Also, because the purifier is not subjectedto heat of flames, e

the sediment therein will not be baked into ajs'cale. Likewise, theheating of the feed water as it passes through the purifier equalizesthe temperature between the feed water and the boiler water in that saidfeed water enters the boileratpractically boiler temperature. It islikewise plain that eachshell -m'ay-be individually [blOWIl'OHt so as todischarge the sediment therefrom,-

ends of each independently blownout. T V

When the valve 4A is opened to discharge scum,oil and the like from'thetrap 35, the

and further, shell may be from'said trap to one of the steam drums willbe closed to prevent withdrawal of steam from; said steam drum.

In "the modified form of the invention I do not utilizeportionsof-certa-in of the-water tubes of the boiler as inletanddischarge connections of the purifier- In accordance with this formof'the invention, I employ a separate inlet connection '85- whichisconnected to one or" the steam drums of the boiler'below the waterlever and with the coupling 3, as shown clearly in Fig. 7,-and alsoIemploy a sepanected to the mud drum of. the boiler and to an elbow 87which, in turn, is arranged in communication wrththe stand ipe 71 of thelowermost shell of the puri erby a pipe 88. i

the sediment" discharge pipes through the associated with the pipe 36leading Also, as suggested Fig. 5, I may extend "91 do not cnds'orheads'of the shellsin'stead of through the sides thereofas in-tliepreferred construction' of the invention. "In'the 'view'referred to, 1designates-a shell of the purifier tlironglrtlie end wall or head 1of'which a sediment discharge pipe 18 is extended,

which sediment discharge pipe will be con nected in any convenientmanner to the main blow-off pipe.v

t will benoted by referringto Fig. 2 that between the uppermost and theintermediate sl ells .of the purifier at the :righthand end thereof, Iprovide a pair of .tank flanges 90 .-into which a short section .ofpipe91 is screwed. This arrangement resembles the connection between theuppermost and. intermediate shells at the lopposite'endsofsaid shellsthrough which the interiors of these shells are placed in communicationwith each other. However, thetank flanges 9O andpipe act as connections,between the in-* teriors of-the shells referred to, for the reason thatthe walls of-said shells are not apertured at this:point, saidelements-merely acting as supporting means for the uppermost shell atthe righthand end thereof. In this connection, it is pointed'out'thatoneof the tank flanges 90 will-be secured :tothe intermediate shellofthe purifier, but the other tank flange 90 will notbe secured to theuppermost shell but merelyprovides a seat for said shell. .In view ofthis arrangement the shells are of said iells being imperforateat saidsupporting means so'that there will be no communicationbetween theshells through the section of pipe 93. In-this; case also, only one: ofthe tank flanges is connected to a shell softhat said shellsmay expandand contract longitudinally with relation to each other.

of which one ofmy improvedpurifiers is composed, within a casing 95formed preferaoly 'of sheet metal from whichthe; opposite end portionsof the shellsiextend, which casing is supported by I preferto';interpose suitable heat insulating material97: between the wallsofthe casing 95andythe' "ails of the shells of the purifier, asindicated in Figs; 2 and 4.

. *jlt obvious, of course, that instead of producing a purifier composedof a plurality of separate shells as in the preferred construction of'myinvention, I may The tank a suitableframe 96. Also, I r

produce a puriher which: comprises asingle shell ofv proper capacitythrough which a plurality of passageways are formed -ii'rany desiredrelative arrangement, which passageways will be provided with theba'llies, stand pipes, and

sediment discharge pipes disclosed in connect-ionwith mypreferredconstruction.

The shells of which-the purifier is-composedareeach set 'at-an inclineso that its outlet 1 end is slightly higher than the inlet end thereof,in order to facilitate the passage ofairalon the tops of the shells topoints where said air may pass from the shells through the ar conductors34, 78,79- and 80. The scaleof the drawing relative tothe actual size ofthe purifier is verysmall, and as the inclination is very slight, suchinclination would scarcely be perceptible to the eye, and

no attempt has been made to illustrateit. I

desire tostate the fact, however, in the interest of a full disclosureof the invention.

The advantage or the preferred form of -theinvention, which involveswithdrawing boiler water from the boiler at pointsdistributedlengthwise, or transversely, of the boiler, and introducingwater into the boiler at points similarly distributed, is of greatimportance inasmuch asthis arrangement results in ncreased. circulationof the water throughout the entire boiler. This arrangement eliminatesthe likelihood that circula- 'tion wouldbe increased in aportion'only'of the boiler, as may be the case if a single connectionwere employed asin my pending applicatlon, which y'ouldresult 1ndifferences of temperature of the boiler water, whereby ha-rm may resultto the boiler due to expansion and contraction thereof.

.1 claim: v V

1. *In a water-purifier of the class described,

(the combination of .a plurality of elongated shells arranged one'abovetheother, the topmost shell and each intermediate shell having anoutlet pipe :fll'kOIlG end thereof communicating with the-correspondingend of a succeeding shell and having its :inlet mouth located at anelevated level within its shell,

said outletpipes being arranged-at opposite ends of alternate shells andthe outlet pipe from the lowermost shell leading to the boiler, each ofsaid shellsbeing inclined up- I prefer .to enclosethe plurality ofshells wardly toward its outlet enthmeans for re moving the sedimentfrom said shells, and

an air release pipe leadingout ofthe upper side of each'shell at-theenidportion thereof contalning the outlet pipe.

2. Ina water purifier of the class described.

tbecombination of a plurality of elongated shells arranged one above theotherin a substantially horizontal position .and' in commixture of hotboiler water and feed water memes into the purifier, an outlet pipeleading from an end of the lowermostof said elongated shells into theboiler, means for removing sediment from said shells, and supportingmembers for said shells arranged intermediate of each pair of shells andmounted at opposite ends of alternate shells, one end of each shellbeing loosely supported on the supporting member mounted on the shellbeneath it, whereby said shells may expand and contract relative to eachother.

3. In a water purifier of the class described, the combination of aplurality of elongated shells arranged one above the other insubstantially horizontal position and in communication With each otherat opposite ends in alternation, a connection including a feed waterpipe at an end and upper side of the topmost of said shells adapted tobe connected with a boiler to introducea mixture of boiler water andfeed Water into said shell, an outlet pipe leading from an end of thelowermost of said shells int-o theboiler, a blow-off system common toall of the shells, a dome extended upwardly from one of sa d shells andoperating as a trap in Which air from the upper portion of saidshelliscollected,

and a pipe for placing said blow-off system in 7 communication with theinterior of said dome.

In testimony whereof, I have hereunto set my hand. i EDWARD J. BROCK.

